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Re: [MW:35191] Re: WELD DISTANCE AS PER ASME

By Materials & Welding
Dear Sir,

The minimum distance between welds is specified as follows: 

 1. ASME B31.3 Process Piping:
For Circumferential Welds: The minimum spacing between circumferential welds must be at least four times the thickness of the thicker component, with a mandatory minimum of 25 mm (1 inch).
For longitudinal welds on adjacent shells or sections, the required distance should be no less than five times the wall thickness of the thicker section, with a minimum spacing of 38 mm (1.5 inches).
2. AWS D1.1 Structural Steel Welding:
 The distance between welds in structural steel applications should be at least four times the thickness of the thinner member being joined, with a minimum requirement of 10 mm (0.4 inches). 
3. API 1104 Pipeline Welding:
For adjacent girth welds, the minimum spacing must be at least one pipe diameter, or 100 mm (4 inches).

Best regard,
Mostafa Daif, Cweng,

Le mar. 27 août 2024 à 10:47, S P Ali <syabuzar@gmail.com> a écrit :
ASME does not outline this, whereas some British standards, such as "BS 4515:2009," require 4 times the wall thickness of the thinner part to be joined.

ARAMCO says in "SAES W11" spacing shall be 3x wall thickness or 20mm, whichever is greater.

If you're working on a project, double-check the specifications or applicable code. If you're preparing for an interview, remember both.

On Tuesday, May 2, 2017 at 9:46:40 AM UTC+3 hajarath ali wrote:
Not required any minimum distance between Socket weld joint as per ASME B31.3.

Referance : 

B31.3 Interpretations No. 14 Interpretation: 

Question (4): Does ASME B31.3-1993 Edition, Addenda b, have requirements for the minimum lengths of pipe sections between welds? 
Reply (4): No


On Sunday, April 23, 2017 at 9:01:07 AM UTC+3, Faizal, Majeed [c] wrote:

Can anyone please confirm the Minimum distance between Socket weld joint as per ASME B31.3 where its specified.

 

Regards,

 

Faizal

 

 

 

 

 

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